T.R. Knight 'Surprised' Boyfriend Was Interested

Having been dating Mark Cornelson since February, T.R. Knight has formed some perspective on their relationship – and their age difference.

"It's bound to raise some eyebrows," the 35-year-old Grey's Anatomy star tells Extra for an interview due to air Thursday, "but we love each other."

Cornelson, 19, is a student and "an amazing guy. I love being around him," says Knight. "I love what we have."

With a laugh, the actor also says, "I was surprised he was interested!"

Despite the legalization of same-sex marriage in California – which has prompted Ellen DeGeneres and Star Trek vet George Takei to announce (separately) that they intend to wed their respective partners – Knight has no similar plan for the immediate future.

"We've only known each other for six months, so I think it's a little soon to consider marriage." Still, he says, "I don't think you date anyone that you don't see a future with."

Asked if he's interested in having children: "The idea of it, yes," he responds. "Adopting."